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10

NOTICE

EXAR Corporation reserves the right to make changes to the products contained in this publication in order to 
improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any 
circuits described herein, conveys no license under any patent or other right, and makes no representation that 
the circuits are free of patent infringement. Charts and schedules contained here in are only for illustration 
purposes and may vary depending upon a user’s specific application. While the information in this publication 
has been carefully checked; no responsibility, however, is assumed for inaccuracies.

EXAR Corporation does not recommend the use of any of its products in life support applications where the 
failure or malfunction of the product can reasonably be expected to cause failure of the life support system or 
to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless 
EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has 
been minimized; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately 
protected under the circumstances. 

Copyright 2011 EXAR Corporation

Datasheet October 2011.

Send your UART technical inquiry with technical details to hotline:  

[email protected]

.

Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited. 

 

 

XRA1403/1405 EVALUATION BOARD USER’S MANUAL

REV. 1.0.0 

3.0 TECHNICAL SUPPORT

If there are any questions, please send an e-mail to 

[email protected]

.

J77

Selects the corresponding signal for pin 2 
of 24-pin TSSOP package

Jumper in 2&3 sVDD signal (default)
Jumper in 1&2 sVDD signal

J78

Selects the corresponding signal for pin 
21 of 24-pin TSSOP package

Jumper in 2&3 selects CS# signal (default)
Jumper in 1&2 selects A0 signal

J79

Selects the corresponding signal for pin 3 
of 24-pin TSSOP package

Jumper in 2&3 selects SI signal (default)
Jumper in 1&2 selects RESET# signal

J80

Selects the corresponding signal for pin 
23 of 24-pin TSSOP package

Jumper in 2&3 selects SO signal (default)
Jumper in 1&2 selects SDA signal

J81, J82, 
J83, J84, 
J85, J86, 
J87, J88, 

J89, J90

Not used for XRA1405IG24-F

Not installed

T

ABLE

 7: J

UMPER

 S

ETTINGS

 F

OR

 XRA1405IG24-F

J

UMPERS

F

UNCTIONS

C

OMMENTS

Содержание XRA1403IG24-0B-EB

Страница 1: ...21 CS CS _SPI signal at J5 pin19 1 4 From the MCU write the following registers GCR1 0x00 GCR2 0x00 If the LEDs turn on the communication with the GPIO expander is successful To disable connection to...

Страница 2: ...ed only for the XRA1405 Jumper in 1 2 selects 3 3V Jumper in 3 4 selects 2 5V Jumper in 5 6 selects 1 8V J11 Selects the supply voltage for VDD Jumper in 1 2 selects 3 3V default Jumper in 3 4 selects...

Страница 3: ...or on board 3 4 connects GPIO9 to LED 0 ohm resistor on board 5 6 connects GPIO10 to LED 0 ohm resistor on board 7 8 connects GPIO11 to LED 0 ohm resistor on board 9 10 connects GPIO12 to LED 0 ohm re...

Страница 4: ...in 1 2 selects A0 signal J88 Selects the corresponding signal for pin 23 of 24 pin QFN package Installed but not used for XRA1403IL24 F Jumper in 1 2 selects VDD signal Jumper in 2 3 selects VDD sign...

Страница 5: ...but not used J71 Selects the supply voltage for VDD for 24 pin TSSOP packages Jumper in 2 4 selects VDD default Jumper in 1 3 selects VDD Jumper in 3 5 selects VDD J72 Selects the corresponding signa...

Страница 6: ...selects RESET signal Jumper in 2 3 selects SI signal J80 Selects the corresponding signal for pin 23 of 24 pin TSSOP package Installed but not used for XRA1403IG24 F Jumper in 1 2 selects SDA signal...

Страница 7: ...Header for connecting GPIO 15 8 signals of TSSOP package to LEDs 1 2 connects GPIO8 to LED 0 ohm resistor on board 3 4 connects GPIO9 to LED 0 ohm resistor on board 5 6 connects GPIO10 to LED 0 ohm re...

Страница 8: ...selects SO signal J86 Selects the supply voltage for VDDP for 24 pin QFN packages Jumper in 2 3 selects VDDP default Jumper in 1 2 selects VDDP J87 Selects the corresponding signal for pin 18 of 24 pi...

Страница 9: ...connecting GPIO 15 8 signals of QFN package Installed but not used J71 Selects the supply voltage for VDD for 24 pin TSSOP packages Installed but not used for XRA1405IG24 F Jumper in 1 3 selects VDD...

Страница 10: ...has been minimized b the user assumes all such risks c potential liability of EXAR Corporation is adequately protected under the circumstances Copyright 2011 EXAR Corporation Datasheet October 2011 S...

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